The dark universe after reheating in string inflation
Abstract We study the production of dark matter and dark radiation after reheating in string inflation models where the Calabi-Yau has a fibred structure and the visible sector lives on D3 branes. We show how the interplay between different physical constraints from inflation, reheating, supersymmet...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2022-12-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP12(2022)068 |
| _version_ | 1797860053554823168 |
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| author | Michele Cicoli Kuver Sinha Robert Wiley Deal |
| author_facet | Michele Cicoli Kuver Sinha Robert Wiley Deal |
| author_sort | Michele Cicoli |
| collection | DOAJ |
| description | Abstract We study the production of dark matter and dark radiation after reheating in string inflation models where the Calabi-Yau has a fibred structure and the visible sector lives on D3 branes. We show how the interplay between different physical constraints from inflation, reheating, supersymmetry breaking and dark radiation, leads to distinct predictions for the nature of dark matter. In particular, in Fibre Inflation dark matter can only be primordial black holes or an open string QCD axion with an intermediate scale decay constant since WIMPs are always too heavy and ultralight closed string axions cannot behave as fuzzy dark matter due to strong isocurvature bounds. On the other hand, Kähler moduli inflation can allow for non-thermal WIMP dark matter at the TeV-scale. |
| first_indexed | 2024-04-09T21:40:41Z |
| format | Article |
| id | doaj.art-e156374b81c3481186b298bbf3d20473 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-04-09T21:40:41Z |
| publishDate | 2022-12-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-e156374b81c3481186b298bbf3d204732023-03-26T11:05:12ZengSpringerOpenJournal of High Energy Physics1029-84792022-12-0120221212810.1007/JHEP12(2022)068The dark universe after reheating in string inflationMichele Cicoli0Kuver Sinha1Robert Wiley Deal2Dipartimento di Fisica e Astronomia, Università di BolognaDepartment of Physics and Astronomy, University of OklahomaDepartment of Physics and Astronomy, University of OklahomaAbstract We study the production of dark matter and dark radiation after reheating in string inflation models where the Calabi-Yau has a fibred structure and the visible sector lives on D3 branes. We show how the interplay between different physical constraints from inflation, reheating, supersymmetry breaking and dark radiation, leads to distinct predictions for the nature of dark matter. In particular, in Fibre Inflation dark matter can only be primordial black holes or an open string QCD axion with an intermediate scale decay constant since WIMPs are always too heavy and ultralight closed string axions cannot behave as fuzzy dark matter due to strong isocurvature bounds. On the other hand, Kähler moduli inflation can allow for non-thermal WIMP dark matter at the TeV-scale.https://doi.org/10.1007/JHEP12(2022)068Axions and ALPsModels for Dark MatterString ModelsSupergravity Models |
| spellingShingle | Michele Cicoli Kuver Sinha Robert Wiley Deal The dark universe after reheating in string inflation Journal of High Energy Physics Axions and ALPs Models for Dark Matter String Models Supergravity Models |
| title | The dark universe after reheating in string inflation |
| title_full | The dark universe after reheating in string inflation |
| title_fullStr | The dark universe after reheating in string inflation |
| title_full_unstemmed | The dark universe after reheating in string inflation |
| title_short | The dark universe after reheating in string inflation |
| title_sort | dark universe after reheating in string inflation |
| topic | Axions and ALPs Models for Dark Matter String Models Supergravity Models |
| url | https://doi.org/10.1007/JHEP12(2022)068 |
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